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Published on: July 7, 2020
Recent advances in the development of antimicrobial peptides against ESKAPE pathogens
Cesar Augusto Roque-Borda1,2, Laura Maria Duran Gleriani Primo1, Henrik Franzyk3
1São Paulo State University (UNESP), Tuberculosis Research Laboratory, School of Pharmaceutical Sciences, Araraquara, Brazil.
Abstract:
Multi-drug resistant ESKAPE pathogens (Enterococcus faecium, Staphylococcus aureus, Klebsiella pneumoniae, Acinetobacter baumannii, Pseudomonas aeruginosa, and Enterobacter species) are a global health threat. The severity of the problem lies in its impact on mortality, therapeutic limitations, the threat to public health, and the costs associated with managing infections caused by these resistant strains. Effectively addressing this challenge requires innovative approaches to research, the development of new antimicrobials, and more responsible antibiotic use practices globally. Antimicrobial peptides (AMPs) are a part of the innate immune system of all higher organisms. They are short, cationic and amphipathic molecules with broad-spectrum activity. AMPs interact with the negatively charged bacterial membrane. In recent years, AMPs have attracted considerable interest as potential antibiotics. However, AMPs have low bioavailability and short half-lives, which may be circumvented by chemical modification. This review presents recent in vitro and in silico strategies for the modification of AMPs to improve their stability and application in preclinical experiments.
Insights
Antimicrobial peptides (AMPs) show promise against drug-resistant ESKAPE pathogens. Chemical modifications enhance AMP stability and bioavailability, aiding preclinical development for new antibiotic therapies.
Area of Science:
- Microbiology
- Infectious Diseases
- Drug Discovery
Background:
- Multi-drug resistant ESKAPE pathogens pose a significant global health threat, leading to increased mortality and healthcare costs.
- Existing antimicrobial treatments face limitations due to widespread resistance, necessitating novel therapeutic strategies.
- Antimicrobial peptides (AMPs), part of the innate immune system, exhibit broad-spectrum activity and potential as antibiotics.
Purpose of the Study:
- To review recent in vitro and in silico strategies for modifying antimicrobial peptides (AMPs).
- To explore methods for enhancing AMP stability and bioavailability for improved therapeutic applications.
- To discuss the potential of modified AMPs in preclinical settings against resistant pathogens.
Main Methods:
- Literature review of in vitro and in silico studies on antimicrobial peptide modification.
- Analysis of chemical modification strategies aimed at improving AMP stability and efficacy.
- Evaluation of preclinical data related to modified AMPs against resistant bacterial strains.
Main Results:
- Chemical modifications can significantly improve the stability and bioavailability of AMPs.
- In vitro and in silico approaches offer viable pathways for AMP optimization.
- Modified AMPs demonstrate potential for enhanced activity against multi-drug resistant pathogens.
Conclusions:
- Antimicrobial peptides represent a promising avenue for combating multi-drug resistant infections.
- Strategic chemical modifications are crucial for overcoming the limitations of natural AMPs.
- Further preclinical development of modified AMPs is warranted to address the ESKAPE pathogen threat.
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